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Three forms of the Greenish Warbler complex (Phylloscopus trochiloides sensu lato) show different ways of increase in song complexityтезисы доклада Тезисы
- Авторы: Morkovin Anton, Marova Irina, Ivanitskii Vladimir
- Сборник: 14th European Ornithologists' Union Congress
- Тезисы
- Год издания: 2023
- Место издания: Lund
- Аннотация: We compared the song structure and syntax in Western Greenish Warbler Phylloscopus trochiloides viridanus, Two-barred Warbler Ph. trochiloides plumbeitarsus, and Green Warbler Ph. (t.) nitidus, recorded in Russia in 2018-2022. The Green Warbler has an isolated breeding range in Caucasus, Transcaucasia and Asia Minor; we recorded its vocalization in Krasnodar region and Karachay-Cherkess Republic. Two Green Warbler subspecies have wide ranges in the Eurasian forest belt; we made records in allopatric populations of Moscow and Kaluga regions for viridanus, Irkutsk region and Republic of Buryatia for plumbeitarsus. All representatives of the Greenish Warbler complex perform discrete songs, made of stable note sequences called song units. We described song structure, population and individual repertoires and spectra-temporal characteristics of their singing. The population repertoire was the largest in Ph. nitidus, and the smallest in Ph. viridanus. The latter performs mostly long song units, while the former combines them with short and repeated ones. In Ph. plumbeitarsus, there was a distinction between different males: some of them performed short and repeated units, while others used mostly longer and not repeated ones. In all forms, most elements were specific to a unit type. On the level of the song sequence, form viridanus had the strictest unit order, and nitidus the most variable: we suppose it depends on the repertoire size, as the order can be memorized easier in case of a smaller unit repertoire. The repertoire of viridanus and plumbeitarsus could shrink during their range expansion because of the founder effect. SynopsisSong syntax differences in three Greenish Warbler forms - viridanus, plumbeitarsus and nitidus - different ways of song elaboration. https://virtual.oxfordabstracts.com/#/event/3770/submission/315
- Добавил в систему: Морковин Антон Алексеевич